The best replacement for wmi is snmp.

The best alternatives to wmi are rated as following:
★★★★★  snmp
★★★  powershell
★★  snmp solarwinds
★  cim
★  winrm
★  psexec
★  wmic
★  netbios
★  jmx
★  performance counters
★  snmp monitoring
  netapi
  wsh
  wsman
  perfmon

Your alternative for wmi is not listed? Suggest!
Speaking about wmi, one probably shouldn't forget about vbscript.

Other search terms related to wmi and their ratings are:
★★★★★ vbscript
You have in mind a companion for wmi and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of wmi in all years. Click on graph for more.
wmi
snmp
powershell